Abstract
ABSTRACT. Using positions and morphological types for 247 Coma Cluster galaxies by Dressler 1980, Ap. 3. S(ipp .,42, 565, we have calculated the smooth surface density distribution of galaxies Pgal (gal ) in this cluster. Moreover, data for absolute magnitude Mv, effective surface brigthness e and effective radius re have been taken from the literature. With all this material we have found a relationship between radius of the galaxy, density, Mv and e' similar to the one recently found by Recillas-Cruz and Serrano (1986, preprint) for clusters of galaxies. This confirms the variation of the structural parameters of elliptical galaxies with gal